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Dividing Fractions
A. Review
Examples of fractions
A. Review
B. Dividing by whole numbers
2÷2
1? 3÷
2
1?
1/2 1/2 ? 2÷ ? 3÷
B. Dividing by whole numbers
1/4
2÷2
1
4
13÷
2
1
6
1
1/6
1/2 1/2 2÷
3÷
B. Dividing by whole numbers
How do you divide a fraction by a number?
When dividing a fraction by a whole number, multiply the
denominator (the bottom number) with the whole number
2÷2
13÷
2
17÷
2
1
2÷2
1
4
1
B. Dividing by whole numbers
Do the following divisions without calculators. Don’t forget to simplify
When you’re done, check your answers with the online calculator
http://www.calculatorsoup.com/calculators/math/fractions.php
4÷2
1 5÷
2
1 2÷
3
1
3÷3
1 3÷
3
2 4÷
3
2
2÷4
1 2÷
4
3 3÷
4
3
C. Dividing by simple fractions
3
1 ÷
2
1?
1/2 ?3
1 ÷
C. Dividing by simple fractions
3
1 ÷
2
1
2
3
1/2 1/2 1/2
1/2 3
1 ÷
C. Dividing by simple fractions
4
1 ÷
2
1?
1/2 ?4
1 ÷
C. Dividing by simple fractions
4
1 ÷
2
12
2
4
1/2 1/2 1/2 1/2 1/2
3
1 ÷
C. Dividing by Simple Fractions
How do you divide a fraction by a fraction?
When dividing a fraction by a fraction, multiply the denominator (bottom number) of the first fraction with the numerator (top number) of the second fraction, AND multiply the numerator (top number) of the first fraction with the denominator (bottom number) of the second fraction.
2÷2
13÷
2
17÷
2
1
3
1÷
2
1
2
3
C. Dividing by simple fractions
Do the following divisions without calculators. Don’t forget to simplify
When you’re done, check your answers with the online calculator
http://www.calculatorsoup.com/calculators/math/fractions.php
2
1÷
2
1
3
1÷
2
1
4
1÷
2
1
2
3÷
2
1
3
2÷
2
1
4
3÷
2
1
2
5÷
2
1
3
4÷
2
1
4
5÷
2
1
D. Mixed Practice
Work with a partner for the practice problems
Check with calculator if you really need to
REMEMBER: a whole number is same as that number over 1
1
66